package exception;

/**
 * finally块最终会执行一次
 *
 */
public class FinallyDemo {
    public static void main(String[] args) {
        System.out.println("程序开始了");

        try {
            String line= "null";
            System.out.println(line.length());
        } catch (Exception e) {
            System.out.println("出错");
        }finally {
            System.out.println("必须会执行一次");
        }
        System.out.println("程序结束了");
    }
}





